Steering-wheel lock



y 1,621,051 March 15, 1927- yH, F. AYOUB STEERING WHEEL LOCK FiledJamll, 1926 l Patented Mar. 15, 1927.

1 Hannan. Aironet-.oran raso, TEXAS.

sTEEninG-WHEEL 1.00K.

. Application filedv January 11,1325 semina. 80,595.

vide 'a look having a loclebolt which may be set by` pressure whenV akeyis in locking position` andI is adapted.. to e' move automati-ycallyv to a ,positive releasing position- IWhen thekey is 'turnedtorelease position,pthereby preventing sticking ofthe belt and ensuringits positive retraction' to a fulldegree on a manipulation of' the keytoproper position.

Still another objectA ofthe invention s is to provide a lock which,While lof simple and inexpensive construction, is proof against accessto its Workingmechanism.andits being tampered with to render itinoperative Within anyv reasonable period of time, thus ensuring allreasonable safety against theft oi`- the vehicle. i l

In lthe vaccomp anying drawing showing,I the use of'my invention, llfor.example, i'nry lockeL ing.. the steering., rod 'oiv an automobile from emovement;- Y

Figure 1f is a horizontal cross-section through the steeringv column andrelated parts of an automobilesteering.gearggshovvr ingthelock applied'thereto.. e y

Figure 2 1s an end elevation of, thelock, partly, in section.

Figure `3 is asection, ontlie line 3,-3 of Figurel. l

Figure 4 is a fragmentary view: similar to FigureI l, showing the lockin seotionand the boltprojectedi 3 A Figure 5 is a view similar toFigure4, sliowingthebolt retracted. y y; 1

Figure 6 is afseetion on ythe lineGX-of Fi ure/4.` p

Figurev 7 isf aview of the llangedsdisl;

Figure 8 is. a .:vievvV of thelatch.

R erring, now morepart'lcularly toy the drawing; 1 vdesignates myimproved. lock,

Which-comprises af casingf- 2, having at one side, asemifoi'rcnlarportion 3 cooperating Witha similarly shapedclampzmember 4 to form acircular shackle, `whereby the look is` adapted to lbe arranged,torembracejan y automobile,steeringcolumn orthezlikee: @he

parts B`and14l are vprovided With bosses 5f andi 6, the bosses 5 lbeing'ormedjwvith threaded passages#1 and the bosses jvith,y threaded'sockets 8-to receive threaded fastening; keys 60 orplugs 9. These keysor plugs 9'ina`y`b`e initially in the form of headed `screvvsfthe lheadsof which aro'cut oli flushvith the'outer, faces of the bosses 5through which 'theip'assages 7 open. a'ftervthe parts are fastenedfto-`65 gether, leaving' the screws'devo'id. fof 'siir'lfaces which may be Vgripped for engaged :to permitf y l removal oiithe'screws. The'partl4Lmaye7 tl'ijerefore,V be'made initially, Separatevfi'oin the lockcasing-,to permit theflockf to`rr lo`e'70 l applied te .an automobileSteering Colu'mnA.

or the like Without removalv ofthe steering, When the headsofjthe screwsare` wheel; y cut ofix the screws cannotfbe removedf with:y

out difliculty or' attracting attention in *case 75 an attempt is madeto surreptit'iously remove them, thus givingamplefrneasure offprotec.-.f

tion against the possibleunauthorizedremoval of .the lock in; `thismanner. Any

other safe ,mode of, permanently. connecting. 8O. 'i i theparts 3- 'and'4f` after: application :ofthe loekifor use-may, hoiveverbe employed, x

The rclamp 4 is provided at amedialpointwith a projection. 10 extendinginto the shackle opening 11.A K adapted for .cooperation Withaslidingloek bltf 12 yto hold the lockcentened on thesteelfing'columnagainst displacement. Inprac: tice,l the steering column `is fbored atlone iside to receive lthe project-ioni@andthe; column,

and contained sleevesB-C arebored at the opposite; side to receive; and;permit moves ment of the infner end oJthe boltf125 thel steering rod .orshaftv being yformed,W-itha soeket toreoeivejsueh innen endof thenbolti* When thelatter :is proj ecteflz, so :that the fsteerr, ingy gear maybeplor-zkedy with thev steering wheelszin anyfprescribed position,l 'Ehe'prof jeetion 10,-in the eventof- Wear oiitheflock.-

ingsendv ofthe bolt, will` prevent thefflookj fromshifting outiof properpositionfo'r en-4 gagement of' the lockingI ybolt v.With-its are#ceiving socketl inthe steering rody on shaft.

From the `foregoing the'applioation; of .the

invention .for useuponl the steeringfgeari of y an: automobile.Will/befapparent.

The bolt 12.isfmovablein-andthrough'an i opening 13 extendingdiametrioallyy through the casing in axial alinementfWiththeaprfofjectionflO,V They bolt iS.; 0fgreater 'length 110 than theopening 13 so as tol normally. `pres `ent a5 locking end 1.4' and.I a.manipulating and I aan.

The projection :i is` 85,

15. The end' `14 normally extends into the shackle opening 11 a suicientdistance to terminate Hush with the inner surface of the inner sleeveenclosed by the 'column when :the bolt is in retracted position,allowing proper clearance for the normal rotation of thesteering shaft,and the openings in they sleeves (gas and spark) being sufciently largeto permit of their free movements without interference from thebolt,while the outerend of the bolt is always exposedto i anextent topermit itto befmanually manipulated for projection.` i

AAt one side of the bolt passage 13 the casing 2 isprovided with acircular chamber 16which opens at its outer end through one of thelateral faces of the casing and at such end communicates with an insetgroove i or rabbet 17. At the opposite side of the boltpassage 1 3r fromthe chamber 16 the `casing 2 is formed with a second .chamber Thischamber 18 extends radially 1n- .ward from the shackle opening 11 andcomfmunicates with the passage 13 through a slot 19 and saidl chamberhas a bottom wall 20 at its base or outer end and is closed by a plug 21at its inner end. A pin 22 is fixed to and projects from the boltthrough vthe slot 19 into the chamber 18, in which chamber is enclosed.a y spring 23 acting on said pin to hold the bolt normally retracted. Aslot v24 connectsy the passage 13 with the chamber 16, through which theadjacent side of the bolt is exposed to thev chamber 16, and said sideof the bolt is provided with a locking notch 25 and is flattened, as

countersunk in the recess 17.

`disposed at a indicated at 26, for engagement at its latferal marginswith the said'walls of said slot 24' to hold the bolt' from rotation andto also ensure the registration of the notch with and its exposurethrough said slot. Vhen 'the bolt is retracted the notch 25 is per endof said slot. A flange 32 extending part way around the platefisprovided to frictionally engage the wall of chamber 16 and hold saidplate in position. Fitted. for rotation in the cylinder 27 is a tumbler33,

l said tumbler having a keyway 34 of a deteri eso mined form. Atitsinner endv this tumbler carries a cam disk 35 adapted formovementbetween the plate 30, and a shoulder 36 on a latch 37 having a shankportion 38 slidable in a socket in thel cylinder and adapted to beprojected by a spring -39 surrounding saidshankbetween the cylinderpoint in proximity to the outer and shoulder` 36. The disk is so shapedthat on a half revolution of the cylinder` in one direction the latchwill be permitted to move inward to locking position under pressure ofspring 38, while on a reverse half'revolution of the cylinder the latchwill be pressed backward to retracted position against the resistance ofthe spring, which is thereby tensioned.y On itsmovement to lockingposition the ylatch head passes through the opening 31 in the guideIplate 30, which opening is so arranged as to lie in register with thenotch 25 in the bolt 12 when the latter is moved inwardly to lockingposition under pressure on its end l5' against the resistance of itsretracting spring 23. On ythe forward movement of the Vbolt to lockingposition, the bolt head snaps into engagement with the notch 25. When,however, the bolt is retracted by the cam the bolt will be released andVwill be retracted by its spring 23. It will thus be seen that when thelatch is projected by the cam its head will extend into the slot 19 andride in Contact with the surface of the bolt and be held by the latterin partly retracted position against the resistance of spring 38 duringthe forward movement of the bolt and. until notchr 25 comes intoalinement withthe latch head, whereupon the pressure of spring 38 willseat the bolt head in the notch 25. The bolt will then be held locked inprojected position with its end 14 engaging the keeper recess in thesteering shaft or other part to be held locked. The

bolt will be so held until a proper key is inserted in the key guidewayand the tumbler turnedy back to release position, in which action thecam positively retracts the latch, whereupon spring 23 positively'retracts the bolt. Itis evident, of course, that, with thc latch inlocking position, movement of the bolt to locking and locked position isaccomplished by pressure ofthe thumb or finger of the operator on thebolt end 15.

A lock of the type described is simple of construction, inexpensive ofproduction, so that it may be manufactured and sold at a comparativelylow cost, and give a high degree of safety lin use. While theconstruction disclosed'is preferred, it will, of course, be understoodvthat various changes in theform, proportionsl and vdetails ofconstruction, yfalling within the scopev of the appended claims, may bemade without departing fromY the spirit or sacrificing any of theadvantages of the invention.V

Having thus fully described my invention, I claim 1. In a lock, aV lockbody having a shackle portion land a casing portion, the latter be ingprovided with `a bolt-passage and a chamber arranged at right angles toeach other and separated by a wall having a slot alfordingcommunicationbetween said pasing position.

2. In a lock, a lock body having a shackle portion and a casing portion,the latter be-y ing provided with a bolt-passage and chambers atopposite sides thereof, one of said chambers being parallel with and theother arranged at right angles to the boltpassage, each chamber beingseparated from the passage by a partition Wall having a slot affordingcommunication between it and said bolt-passage, a spring-retracted,manuallyprojectible bolt removable in said bolt-paf sage and having aflattened side bearing against the partition Wall between said passageand the second-named chamber, said side of the bolt being provided Witha notch exposed through the slot in said partition wall to saidsecond-named chamber, a cylinder mounted in the second-named chamber, aspring-pressed latch carried by said cylinder and movable through theslot in the partition Wall against Which the flattened side of the boltbears to engage said bolt notch when the bolt and latch are in coactiverelationship for a bolt locking action,v

key-controlled means carried by the cylinder for shifting the latch intoand out of bolt engaging position, a projection carried by the bolt andextending into the chamber parallel with the bolt-passage through theslot in the intervening partition Wall, and a spring in said parallelchamber acting on said projection to retract the bolt.

3. In 'a` lock, a lock body having a shackle portion and a casingportion, the latter being provided with a bolt-passage and a chamberarranged Vat right angles thereto and separated therefrom by a Wallhaving a slot affording communication between said nas'- sage andchamber, a spring-retracted, manually-projectible bolt movable in saidpassage and having a flattened side bearing against the Wall andprovided With a notch exposed at said slot therein, a cylinderv mountedin the chamber, a latch having a shank at one end slidably mounted inthe cylinder and having a latch member at its opposite end movablethrough said slot to engage said notch, said latch being provided With ashoulder between said shank and latch member,a spring about thel latchshank acting on the shoulder to project the

